Lunch box



FIG. 1 is a top perspective view of a lunch box showing the new design.

FIG. 2 is a left side thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a top view thereof.

FIG. 5 is a rear view thereof.

FIG. 6 is a front view thereof; and,

FIG. 7 is a bottom view thereof.

CLAIM The ornamental design for a lunch box, as shown and described.